<!DOCTYPE html>
<html>

<head lang="en">
    <meta charset="UTF-8">
    <title>canvas时钟</title>
    <style type="text/css">
        html,
        body {
            height: 90%;
        }
    </style>
</head>

<body>
    <canvas id="canvas" style="height:100%">
        当前浏览器不支持Canvas，请更换浏览器后再试
    </canvas>

    <script src="countdown.js"></script>
</body>

</html>
